Dong Wen,Yang Gaobo. Efficient Decentralized Ciphertext-Policy Attribute Based Encryption With Fine-Grained Revocation[EB/OL]. Beijing:Sciencepaper Online[2020-05-19]. http://www.paper.edu.cn/releasepaper/content/202005-134. 此文件来自 中国科技论文在线 请勿作用于商业用途!